5.1.7

The Behaviourist Approach - Operant Conditioning

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B. F. Skinner

The American psychologist B. F. Skinner performed some important research in the field of operant conditioning.

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B. F. Skinner

  • B. F. Skinner (1904–1990) was an American psychologist.
  • Skinner was a behaviourist. He concentrated on how behaviour was affected by its consequences.
  • He believed that behaviour is motivated by the consequences we receive for the behaviour: the reinforcements and punishments.
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Skinner's research device

  • As a part of his research, Skinner developed a chamber that allowed the careful study of the principles of modifying behaviour through reinforcement and punishment.
  • This device, known as an operant conditioning chamber (or more familiarly, a Skinner box), has remained a crucial resource for researchers studying behaviour.
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The Skinner box

  • The Skinner box is a chamber that isolates the subject from the external environment and has a behaviour indicator such as a lever or a button.
  • When the animal pushes the button or lever, the box is able to deliver:
    • A positive reinforcement of the behaviour (such as food).
    • A punishment (such as an electric shock).
    • A token conditioner (such as a light).
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Skinner's approach in wider psychology

  • Skinner’s focus on positive and negative reinforcement of learned behaviours had a lasting influence in psychology that slightly declined since the growth of research in cognitive psychology.
  • Despite this, conditioned learning is still used in human behavioural modification.
  • Skinner’s two controversial science books about the value of operant conditioning for creating happier lives are still thought-provoking arguments for his approach.

Operant Conditioning

In operant conditioning, organisms learn to associate a behaviour and its consequence. Operant conditioning looks at the interaction between positive and negative reinforcement and punishment.

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Specialist terminology

  • In discussing operant conditioning, we use several everyday words (positive, negative, reinforcement, and punishment) in a specialised manner.
  • In operant conditioning, positive and negative do not mean good and bad. Positive means you are adding something, and negative means you are taking something away.
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Reinforcement and punishment

  • Reinforcement means you are increasing a behaviour, and punishment means you are decreasing a behaviour. Either can be positive or negative.
  • All reinforcers (positive or negative) increase the likelihood of a behavioural response.
  • All punishers (positive or negative) decrease the likelihood of a behavioural response.
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Examples of positives and negatives

  • In positive reinforcement, you add a desirable stimulus to increase a behaviour.
  • In negative reinforcement, you remove an undesirable stimulus to increase a behaviour.
  • In positive punishment, you add an undesirable stimulus to decrease a behaviour.
  • In negative punishment, you remove an aversive stimulus to decrease a behaviour.

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10Option 1: Gender (A2 only)

11Option 1: Cognition & Development (A2 only)

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17Option 3: Addiction (A2 only)

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